DOWN
1 Erstwhile British corporation, an unforgettable symbol that invokes nostalgia for starters (6)
2 Band formed by Snoopy and his siblings, without a lead (6)
3 Champion in an automobile (5)
4 Lunatic will get rid of denials, according to the Reverend (7)
6 Detective, going back in, slowed down and resigned (9)
7 Venerated setter, sadly old with a bent side (8)
8 I rob stars stealthily of a dish of beef (3-5)
11 Man, for instance, is a part of this lesson (4)
15 Newspaper article on crude oil trade around India (9)
17 Bias told differently, by the Sun or the Star perhaps (8)
18 Looked down upon the highest path, reportedly (8)
20 Swindle layman? (4)
21 Weapon used by pirates to attack the French ship (7)
22 Upcoming story: Quit eating icecream (6)
23 Get high and dance wildly without shorts at first (6)
26 Fashionable model leaves a regime to form a pop group (5)

17D Bias told differently, by the Sun or the Star perhaps (8) TABLOIDS* (bias+told)*19A Study a wild tiger eating the gut of an antelope, not the head of a goat (7) At(EL)IER (A TIGER -G +El)27A One hundred playing, one hundred celebrated (6) IC ON IC

9A Could be sticky when thousand leave to get chief's wisdom (8) SAGACITY (STICKY -K)* around AGA (chief)25A Visitors stumped by fancy dress one wore (9) OUTSIDERS OUT + I in (wearing) DRESS*26D Fashionable model leaves a regime to form a pop group (5) INDIE IN + DIE(-t)